Add 20/7 and 45/20
1st number: 2 6/7, 2nd number: 2 5/20
20/7 + 45/20 is 143/28.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 7 and 20 is 140
Next, find the equivalent fraction of both fractional numbers with denominator 140 - For the 1st fraction, since 7 × 20 = 140,
20/7 = 20 × 20/7 × 20 = 400/140 - Likewise, for the 2nd fraction, since 20 × 7 = 140,
45/20 = 45 × 7/20 × 7 = 315/140 - Add the two like fractions:
400/140 + 315/140 = 400 + 315/140 = 715/140 - 715/140 simplified gives 143/28
- So, 20/7 + 45/20 = 143/28
In mixed form: 53/28
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